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Fencer Vulns
medium 6.1

CVE-2017-2166 json

Open redirect vulnerability in GroupSession version 4.7.0 and earlier allows an attacker to redirect users to arbitrary web sites and condu…

published 2018-01-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-11349

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

Open redirect vulnerability in GroupSession version 4.7.0 and earlier allows an attacker to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected products

  • Japan Total System Co.,Ltd. GroupSession

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.